Replacing your doors and windows is always a good idea for a home improvement project. It can improve the energy efficiency of your house and increase its appeal. The difficult decision is whether to replace them both at the same time. So, if you're wondering should I replace my windows and doors at the same time, then you're at the right place. Yes, it's always a good idea to replace your doors and windows at the same time. It'll give you a complete set of brand-new windows and doors. If you replace only your windows, it might be difficult to find doors that match the same design later on. Replacing them together has a ton of other benefits as well.